Bisphenol A synthetic resin catalyst and preparation method thereof

Abstract

The invention provides a bisphenol A synthetic resin catalyst and a preparation method thereof. According to the method, the crosslinking degree being 2 to 8 percent is used; third monomers with unsaturated double bonds are introduced to participate in copolymerization; mesoporous white balls with the pore diameter being 1 to 20 nm are obtained and are used as parent matrixes; then, a mild sulfonation process is used for sulfonation; finally, the resin is modified; and a high-intensity strong acid and mesoporous cation resin catalyst with the pore diameter being 2 to 10nm can be obtained. The pressure difference of the materials on the catalyst can be reduced by mesopores formed in the catalyst; the mesopores are favorable for the generation of bisphenol A; byproducts are few; the third monomers of diallyl bisphenol A are added into the catalyst in polymerization, the inside crosslinking structure of the resin is more stable; the pressure-resistant intensity is improved; the affinity of the resin on phenol is improved; the swelling property of materials of the phenol, acetone and the like on the resin is reduced; the damage of the materials to the resin is reduced. The catalyst provided by the invention has the advantages that through the addition of modifying agents, the effects of a cocatalyst are achieved; and the phenol and acetone conversion rate of the reaction raw materials is improved and is high.

Description

technical field [0001] The invention relates to a bisphenol A synthetic resin catalyst and a preparation method thereof, in particular to a high-strength bisphenol A resin catalyst and a preparation method thereof. Background technique [0002] Bisphenol A is the abbreviation of diphenol-based propane, also known as 2,2-bis(4-hydroxyphenyl)propane. As an important organic chemical raw material, bisphenol A mainly produces polysulfone resin, polyphenylene ether resin, Polycarbonate, epoxy resin and other polymer materials are also used in fine chemical products such as plasticizers, flame retardants, antioxidants, heat stabilizers, rubber antioxidants, pesticides, coatings, etc. The demand for A is increasing day by day. In industry, fixed-bed reactors are basically used to produce bisphenol A. At present, because the bisphenol A production technology independently developed in China cannot meet the needs of the production process in terms of catalyst technology, the quality...

AI Technical Summary

Problems solved by technology

In industry, fixed-bed reactors are basically used to produce bisphenol A. At present, because the bisphenol A production technology independently developed in China cannot meet the needs of the production process in terms of catalyst technology, the quality is far from meeting the market demand. Bisphenol A production technology has been imported from abroad, but due to the monopoly of foreign companies on catalyst technology, they can only import high-priced resin catalysts. The localization of bisphenol A technology has been severely restricted. To improve the production capacity of bisphenol A in my country To produce high-quality bisphenol A products, it is necessary to produce a resin catalyst with excellent performance

[0003] In the reaction process of bisphenol A catalyzed by the resin catalyst bed, the flow direction of the mixed material in the fixed bed is vertical. When the material flows downward, the pressure drop through the resin catalyst bed is a big problem, which limits the reaction. The flow of substances and products ultimately hinders the formation of bisphenol A

Due to the swelling property of the resin itself, the resin is easily deformed by compression and the crushing of the resin is the main factor for the pressure drop, which limits the scope of use of the resin catalyst.

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